Solid-state illuminating apparatus

Abstract

A solid-state illuminating apparatus ( 10 ) includes a first light reflector ( 11 ), a second light reflector ( 12 ), an annular light permeable cover ( 15 ) and a light source ( 13 ). The first light reflector has a bottom wall ( 111 ) and a peripheral sidewall ( 112 ) extending from and surrounding the bottom wall. The first light reflector has a reflective surface ( 113 ) formed on an inner surface thereof. The second light reflector has a reflective surface ( 121 ) facing toward the bottom wall. The light permeable cover is interconnected between a periphery of the sidewall and a periphery of the second light reflector. The first light reflector, the light permeable cover and the second light reflector cooperatively form a chamber ( 114 ). The chamber tapers along a direction from the second light reflector to the bottom wall. The light source is received in the chamber and located on the bottom wall.

1. A solid-state illuminating apparatus comprising:
 a first light reflector having a bottom wall and a peripheral sidewall extending from and surrounding the bottom wall, the first light reflector having a reflective surface formed on an inner surface thereof; 
 a second light reflector having a reflective surface facing toward the bottom wall of the first light reflector; 
 an annular light permeable cover interconnected between a periphery of the sidewall of the first light reflector and a periphery of the second light reflector, the first light reflector, the light permeable cover and the second light reflector cooperatively forming a chamber, the chamber tapering along a direction from the second light reflector to the bottom wall of the first light reflector, the annular light permeable cover comprising a plurality of protrusions formed on an output surface of the light permeable cover; and 
 a light source received in the chamber and located on the bottom wall of the first light reflector. 
 
   
   
     2. The solid-state illuminating apparatus as claimed in  claim 1 , wherein the light permeable cover is comprised of silicone, resin, glass, polymethyl methacrylate or quartz. 
   
   
     3. The solid-state illuminating apparatus as claimed in  claim 1 , wherein the annular light permeable cover has a circular, polygonal, cross-shaped or star-shaped profile. 
   
   
     4. The solid-state illuminating apparatus as claimed in  claim 1 , wherein the protrusions have a triangular or a rectangular cross section. 
   
   
     5. The solid-state illuminating apparatus as claimed in  claim 1 , further comprising a light penetrable material filled in the chamber. 
   
   
     6. The solid-state illuminating apparatus as claimed in  claim 5 , wherein a refractive index of the light penetrating material substantially equals to a refractive index of the light permeable cover. 
   
   
     7. The solid-state illuminating apparatus as claimed in  claim 1 , wherein the light source comprises a point light source for emitting light toward the second light reflector and a light director, the light director being received in the chamber and configured for directing the light emitted from the point light source to emit toward the first light reflector. 
   
   
     8. The solid-state illuminating apparatus as claimed in  claim 7 , wherein the light director includes a lower portion enclosing the point light source therein and an upper portion disposed above the lower portion, the upper portion having a planar top reflective surface for reflecting the light emitted from the point light source and a slanted transmissive side surface, the upper portion tapering along a direction from the planar top reflective surface to the lower portion. 
   
   
     9. The solid-state illuminating apparatus as claimed in  claim 7 , wherein the light source comprises a base and a plurality of light emitting components arranged in a circle on the base, the light director being located at a center of the base. 
   
   
     10. The solid-state illuminating apparatus as claimed in  claim 9 , wherein the light director has an inverted conical shape, a conical tip thereof being located at the center of the base, an outer conical circumferential surface thereof being a reflecting surface. 
   
   
     11. The solid-state illuminating apparatus as claimed in  claim 9 , wherein the light director is an inverted conical lens, a top surface of the light director being a reflecting surface and an outer conical circumferential surface thereof being a light penetrating surface. 
   
   
     12. The solid-state illuminating apparatus as claimed in  claim 9 , wherein the light director comprises a reflective surface generated by a curved line passing through a fixed point and moving along a fixed circle, the fixed point located proximate to the center of the circle on the base, the reflective surface being configured for reflecting the light emitted from the light emitting components. 
   
   
     13. The solid-state illuminating apparatus as claimed in  claim 1 , wherein the light source comprises a cylindrical base and a plurality of light emitting components engaged with a circumferential surface of the cylindrical base. 
   
   
     14. A solid-state illuminating apparatus comprising:
 a first light reflector defining a chamber therein and an opening at a top thereof; 
 a second light reflector located at a central position of the opening of the first light reflector; 
 a closed light permeable cover located at the opening of the first light reflector and surrounding the second light reflector for sealing the chamber of the first light reflector; and 
 a light source received in the chamber of the first light reflector, wherein the light source comprises a point light source for emitting light toward the second light reflector and a light director, the light director being received in the chamber and configured for directing the light emitted from the point light source to emit toward the first light reflector. 
 
   
   
     15. The solid-state illuminating apparatus as claimed in  claim 14 , wherein the light permeable cover has a circular, polygonal, cross-shaped or star-shaped profile. 
   
   
     16. The solid-state illuminating apparatus as claimed in  claim 14 , further comprising a light penetrable material filled in the chamber, a refractive index of the light penetrating material substantially equaling to a refractive index of the light permeable cover. 
   
   
     17. The solid-state illuminating apparatus as claimed in  claim 14 , wherein the light director includes a lower portion enclosing the point light source therein and an upper portion disposed above the lower portion, the upper portion having a planar top reflective surface for reflecting the light emitted from the point light source and a slanted transmissive side surface, the upper portion tapering along a direction from the planar top reflective surface to the lower portion. 
   
   
     18. The solid-state illuminating apparatus as claimed in  claim 14 , wherein the light source comprises a base and a plurality of light emitting components arranged in a circle on the base, the light director being located at a center of the base. 
   
   
     19. A solid-state illuminating apparatus comprising:
 a first light reflector having a bottom wall and a peripheral sidewall extending from and surrounding the bottom wall, the first light reflector having a reflective surface formed on an inner surface thereof; 
 a second light reflector having a reflective surface facing toward the bottom wall of the first light reflector; 
 an annular light permeable cover interconnected between a periphery of the sidewall of the first light reflector and a periphery of the second light reflector, the first light reflector, the light permeable cover and the second light reflector cooperatively forming a chamber, the chamber tapering along a direction from the second light reflector to the bottom wall of the first light reflector; and 
 a light source received in the chamber and located on the bottom wall of the first light reflector; 
 wherein the light source comprises a point light source for emitting light toward the second light reflector and a light director, the light director being received in the chamber and configured for directing the light emitted from the point light source to emit toward the first light reflector. 
 
   
   
     20. The solid-state illuminating apparatus as claimed in  claim 19 , wherein the light director includes a lower portion enclosing the point light source therein and an upper portion disposed above the lower portion, the upper portion having a planar top reflective surface for reflecting the light emitted from the point light source and a slanted transmissive side surface, the upper portion tapering along a direction from the planar top reflective surface to the lower portion.